Petition Reduce the Default Urban Speed Limit from 30mph to 20mph

This would reduce greenhouse gas emissions, air pollution, noise pollution and make our towns and cities far more pleasing places – let's introduce 20mph speed limits everywhere people live, work and shop: make it the default urban limit. No need for lots of expensive signage – in fact you could probably clear a lot of street clutter. And motorists would see a saving in fuel costs and wear and tear, at the "cost" of an average of 90 seconds being added to their journeys.

We're seeing big progress around the country on 20mph limits – the London borough of Islington is likely to soon be followed by others – but we could make a big national leap and save a lot of campaigners' time and energy, and a significant number of lives, if we took an immediate step across England and Wales.

(Source: http://v.gd/guardian)